Tool chuck



Jan. 13, 1931. G.'c. PEARsoN TOOL CHUCK Filed Jan. 1s, 192s 2 Sheets-Sheet 1 Jim. 13, 1931. l GL c. PEARsVoN 1,788,629

TOOL CHUCK llled Jan. 16, 192e;l 2 sheets-sheet 2 f abbi um,I

` GUSTAV o. PnAnsomoF Dnnvnmoononano, Assieiion'no GiennNnn-Dniwnncoiu- Patented aan. i3, i931 y frissen? Pannen DENVER, ooiioitnno7` AY o'oniomi'iion' on DELAWARE Toon CHUCK.

Appii'tion inegi Janiiai-yie, 192e,l serial nog-247,180. f

The present intention relates particularlyV to. chuck structures y'lorj rock drills vand simi ilartools, and 'the Objectis to provide'a novel mechanism which l will ,permit ythe vremoval' 'sof the tooldio'lding chuckV elementivithout the' necessity of detaching the housing or otherwise materially `dismeinliering th e f mechanism from thetool proper.

1`he ineierredk embodiment of the inven tion is illustratedjin the accompanying drawshown at 5, and located therein is the usual Vpiston 6 having a hammer extension 7. The

usual rifle bar'mechanisin is employed for Veffecting the rota-tion of the pistonon its reciprocation, a portion of the rifle bar being illustratedat 8. Mounted on the front end voi' the barrel 5 is a chuck housing 9 in which is located a rotatable chuck that includes a sleeve 10 Journal-led in the housing 9. This rsleeve has the usual slidab'le interlocking connection 11 with the hammer extension V7. In the embodiment shownthe sleeve 10 also carries a tappet 12 adapted to receive .the blows of the piston and transmit -tliemrto a drill steel 13 or other tool',

'.ihe tool 1&3 is engagedvin a tool-holding` c vchuck member 14 that ean'be slipped into :the front open end oi" the housing, its rear;

end 15 entering the `front end of the sleeve 10 `and said sleeve and chuck having inter- Litting ribs 16 that serve to `insure the rota-tion of the chuck 14 by the sleeve 10.

x One side oic the front end .of the housing 9 is cut away to providey an opening or seat 17, and this is normally closed by a removablel cap 18 held in place by transverse bolts 19 that pass through ears 20 formed on the housing 9 on opposite sides of the seat 17.

This Will be clear byl reference to Figure t.

"housing 9 and cap'18, 'forming a; dirt shie l.

A lllji'e cliuclll isiul'ield against longitudinal y Y lreepereollar 21 prefer-f,y ably'v yl'ormed of two semicircular sections.

displacement 'y by rFhis vcollar is provided at its rearen'd twv-ith an outstanding annular AClange 22 that is en-L gaged inv ani internalV annular A groove f 23 forinedinthe housing 9.V The collar. is pro- Avided atjlitl's front endwith an inset annular Y l'anger2f1 engaged` inf'an ani'iul'ar groove 25'k formedfin the vchuclf 14'.` The-said chuck pref 'erably terminates at its front end; in :i hoofd 26 that overl'iangs the `frontend of the The' cap 18 niayfl'i'ave a lug 2T engaged ii asoci-"ret 28 yformed in the front end of oneof thekeeper sections to hold the keeper aga-'instrotation. f

A'When theparts are inv place m Figure 1',itv\lfi evident that inasmuch. as the keeper' collar v2,1is interlocled at its reaiyend With the housing 9 and its. viont end withy lthe chuck' lll-the`` latter is held against' longitudinal displacement, but capable of' fire-e rotation. The keeper collar 21 is however held' against rotation because as indicated' inFigure 3, the bolts 19 lengage Y the sides of the lowersection of the'keeper collar y ence to Figure 4, Where thebolt openings are 1 .vf... i-k Y .HT il. o0. i snoun s eimer. pai y in .fic eaisn, oL

the housingrl and'partly in the shown section 21.

.TWlien the cliucl becomes Worn or kundenis Willjbe'cleai" also by referas shown in l soL sirable from any cause; it is only necessary to remove `the cap 18, then detach the upper ovithe sections" or'fthe keeper collar 21 by` tali-ing it laterally, out ol: the seat lsof ther housing,partially".rotatethe chuck 11i. to

,he-r half to tl'ieiipper side Where and;reniovev the other,v half of thekeeper.` 'colla-r. whereupon the chuck` can Y bring` the it is; avail a ble be' removedy longitudinally from the 'open frontend of the housing, and by a reverse.

operation, a new, chuck caribe substituted and secured in place. From the forefroinfr it is" thought that the construction, operation and many advan'@A f tages off theflierein described invention j vvill beapparenttothose skilled in the art, With out er description, and it will be understood that various changes in the size, shape, proportion and minor details of construction, may bel resorted to VWithout departing from the spirit or sacrificing any of the advantages lof the invention.

That I claim, is:

l. In a chuck structure, the combination with a chuck housing, of a tubular tool holder removably mounted in the front end of the housing, and having a socket for receiving a tool, and a keeper for. the holder detachabiy located in the housing longitudinally of the housing and holder,` said keeper having its inner end interlocked with the housing and its outer end interlocked with the tool holder at one side of the socket.

2. In a chuck structure, the combination with a chuck housing having an 'opening through its end and a seat opening through one side, of a tubular tool' holder mounted in the iront end of the housing and removable longitudinally from said frontv end,` said holder having a socket opening through its front end and a keeper for retaining the holder in place extending longitudinally of Ythe housing and holder and located'in and 'laterally removable from the seat, said keeper being located alongside the portion of the holder having the socket and detachably interlocking with the holder and housing. I y

3. In a chuck structure, the combination with aV chuck housing having an opening through its end and a seat opening through one side, of a tubular tool holder mounted in the 'front end of the housing and removable longitudinally from said frontend, said holder havinga socket opening through its front end, a keeper for retaining the holder in place located in and laterally removable from. the seat, said keeper being located alongside the portion ot the holder having the socket and detachably interlocking with the holder and housing, and a closure "for the seat covering the keeper and holding it in place.

el. In a chuck str with a chuck housing having an opening through its end and a seat opening through one side, oi"A a tubular tool holder rotatably mounted in the front end of the housing and removable longitudinally from saidY ilrout 0nd akeeper for retaining the holder iu place located in and laterally removable'v Vfrom the scat, and a detachable closure for 'the scat secured to thechuck housing, said Ytably mounted in the housing and removable from the open end, said chuck having an open-ended.tool-receiving socket, and aV keeper collar surrounding the chuck and ucture, the'v combinationv means@ removable from the open side of the chuck 1 housing. Y

6. In a chuck structure, the combination vWith la chuck housing having an open end and an open side, of a chuck rotatably mountedin the housing and removable from the open'end, and a sectional keeper Vcollar around the chuck, the sections thereof being separately removable from the open side of the chuck housing. e ,v

7. In` achuck structure, the4 combination With a chuck housing having an open end GUSTAV vC. PEARSON. 

